Dicyclanil is an insect growth regulator compound with a similar chemical structure to cyromazine[1]. The animals of one group in each flock were treated with dicyclanil and those of the other group were left untreated as controls. The trial lasted 31 weeks and the animals were inspected daily for wohlfahrtiosis. When compared with the control groups, dicyclanil achieved a 100 percent reduction of infestation in the treated groups of both flocks for at least 24 weeks, and an 80 percent reduction for 31 weeks[2]. Dicyclanil (5%) provided at least 18 weeks' protection against CYR-LS and DZR50 L. cuprina[3]. Under Australian field conditions, a ready-to-use 5% spray-on formulation of dicyclanil applied off-shears or to long wool protected Merino sheep from blowfly strike for a period of at least 20 weeks[4]. Dicyclanil has neither in vivo genotoxicity nor initiation activity, and suggest that the hepatocarcinogenicity in mice induced by dicyclanil is attributable to a non-genotoxic mechanism[5].
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